add examples

app.py

@@ -81,6 +81,11 @@ iface = gr.Interface(
     title="BibTeX cleaner",
     description="Clean a BibTeX file or string by dragging the incomplete or broken BibTeX file into the file box or pasting a BibTeX string into the string field. The titles are extracted, searched at the DBLP, compiled into a clean BibTeX file.",
     article="<p style='text-align: center'><a href='https://github.com/jueri/clean_bibtex'>CLI and repo</a></p>",
+        examples=["""@article{devlin2018bert,
+        title={Bert: Pre-training of deep bidirectional transformers for language understanding},
+        author={Devlin, and Chang, Ming-Wei and Lee, Kenton and Toutanova, Kristina},
+        year={2018}
+        }""", ""],
     inputs=[
         gr.inputs.Textbox(label="Paste a string here:", lines=1),
         # gr.inputs.Checkbox(label="Keep original keys:"),